/*

 * Copyright (c) 2022-2023, Linus Groh <linusg@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#pragma once

#include <AK/Forward.h>

#include <LibJS/Forward.h>

#include <LibJS/Heap/GCPtr.h>

#include <LibWeb/Bindings/PlatformObject.h>

#include <LibWeb/Bindings/RequestPrototype.h>

#include <LibWeb/Fetch/Body.h>

#include <LibWeb/Fetch/BodyInit.h>

#include <LibWeb/Fetch/Headers.h>

#include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>

#include <LibWeb/Forward.h>

namespace Web::Fetch {

// https://fetch.spec.whatwg.org/#responseinit

struct ResponseInit {

    u16 status;

    String status_text;

    Optional<HeadersInit> headers;

};

// https://fetch.spec.whatwg.org/#response

class Response final

    : public Bindings::PlatformObject

    , public BodyMixin {

    WEB_PLATFORM_OBJECT(Response, Bindings::PlatformObject);

    JS_DECLARE_ALLOCATOR(Response);

public:

    [[nodiscard]] static JS::NonnullGCPtr<Response> create(JS::Realm&, JS::NonnullGCPtr<Infrastructure::Response>, Headers::Guard);

    static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> construct_impl(JS::Realm&, Optional<BodyInit> const& body = {}, ResponseInit const& init = {});

    virtual ~Response() override;

    // ^BodyMixin

    virtual Optional<MimeSniff::MimeType> mime_type_impl() const override;

    virtual JS::GCPtr<Infrastructure::Body> body_impl() override;

    virtual JS::GCPtr<Infrastructure::Body const> body_impl() const override;

    virtual Bindings::PlatformObject& as_platform_object() override { return *this; }

    virtual Bindings::PlatformObject const& as_platform_object() const override { return *this; }

    [[nodiscard]] JS::NonnullGCPtr<Infrastructure::Response> response() const { return m_response; }

    // JS API functions

    [[nodiscard]] static JS::NonnullGCPtr<Response> error(JS::VM&);

    static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> redirect(JS::VM&, String const& url, u16 status);

    static WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> json(JS::VM&, JS::Value data, ResponseInit const& init = {});

    [[nodiscard]] Bindings::ResponseType type() const;

    [[nodiscard]] String url() const;

    [[nodiscard]] bool redirected() const;

    [[nodiscard]] u16 status() const;

    [[nodiscard]] bool ok() const;

    [[nodiscard]] String status_text() const;

    [[nodiscard]] JS::NonnullGCPtr<Headers> headers() const;

    [[nodiscard]] WebIDL::ExceptionOr<JS::NonnullGCPtr<Response>> clone() const;

    // Pull in json() from the BodyMixin, which gets lost due to the static json() above

    using BodyMixin::json;

private:

    Response(JS::Realm&, JS::NonnullGCPtr<Infrastructure::Response>);

    virtual void initialize(JS::Realm&) override;

    virtual void visit_edges(Cell::Visitor&) override;

    WebIDL::ExceptionOr<void> initialize_response(ResponseInit const&, Optional<Infrastructure::BodyWithType> const&);

    // https://fetch.spec.whatwg.org/#concept-response-response

    // A Response object has an associated response (a response).

    JS::NonnullGCPtr<Infrastructure::Response> m_response;

    // https://fetch.spec.whatwg.org/#response-headers

    // A Response object also has an associated headers (null or a Headers object), initially null.

    JS::GCPtr<Headers> m_headers;

};

}